Flexible display apparatus

1. A flexible display apparatus comprising:

a flexible display panel;

a housing comprising an opening through which the flexible display panel enters and exits the housing;

a cylinder disposed within the housing to coil and uncoil the flexible display panel;

a stretcher that selectively extends from the opening to support the flexible display panel, such that the flexible display panel is substantially planar when the flexible display panel is extended outside of the housing; and

a bender attached to an edge of the flexible display panel, to couple with the stretcher when the flexible display panel is disposed outside of the housing.

2. The flexible display apparatus of claim 1 , wherein the stretcher comprises slide brackets that extend and retract with respect to the opening.

3. The flexible display apparatus of claim 2 , wherein the slide brackets and the bender comprise teeth to reversibly couple the slide brackets and the bender.

4. The flexible display apparatus of claim 3 , further comprising a slider disposed within the opening, to reversibly couple the bender with the slide brackets.

5. The flexible display apparatus of claim 4 , wherein the slider comprises:

a body to guide the bender toward the slide brackets; and

a wedge disposed inside of the body to separate the slide brackets from the bender.

6. The flexible display apparatus of claim 5 , wherein the wedge comprises:

a lower surface disposed parallel to the slide brackets; and

an upper surface that is inclined with respect to the lower surface.

7. The flexible display apparatus of claim 2 , wherein the bender comprises V-shaped grooves disposed on a first surface thereof that faces the cylinder.

8. The flexible display apparatus of claim 2 , further comprising an end cap disposed on ends of the bender and the stretcher and to seal the opening when the bender and stretcher are retracted into the housing.

9. The flexible display apparatus of claim 2 , wherein the slide brackets comprise U-shaped frames disposed on one another, so as to telescopically extend from the housing.

10. The flexible display apparatus of claim 1 , further comprising a handle disposed along an edge of the flexible display, the edge being disposed opposite to the cylinder.

11. The flexible display apparatus of claim 1 , wherein the flexible display panel comprises a liquid crystal display panel or an organic electroluminescence display panel.

12. The flexible display apparatus of claim 1 , further comprising a spring to rotate the cylinder, such that the flexible display panel is pulled into the housing.

13. The flexible display apparatus of claim 1 , wherein the bender covers an outward facing surface of the flexible display panel, when the flexible display panel is coiled around the cylinder.

14. A flexible display apparatus comprising:

a flexible display panel;

a housing comprising an opening through which the flexible display panel enters and exits the housing;

a cylinder disposed within the housing to coil and uncoil the flexible display panel;

a bender to bend the flexible display panel around the cylinder and to support the flexible display panel when the flexible display panel is disposed outside of the housing; and

brackets that selectively extend from the opening to planarize the bender, such that the flexible display panel is substantially planar when the flexible display panel is supported by the bender outside of the housing, and

wherein the brackets and the bender are configured to couple when extended from the housing, so as to be disposed on opposing surfaces of at least one edge of the flexible display panel.